Rainbow-electronics ATA6630 Bedienungsanleitung

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Features
Master and Slave Operation Possible
Supply Voltage up to 40V
Operating voltage V
S
= 5V to 27V
Typically 10 µA Supply Current During Sleep Mode
Typically 40 µA Supply Current in Silent Mode
Linear Low-drop Voltage Regulator:
Normal, Fail-safe, and Silent Mode
ATA6628 V
CC
= 3.3V ±2%
ATA6630 V
CC
= 5.0V ±2%
In Sleep Mode V
CC
is Switched Off
VCC- Undervoltage Detection (4 ms Reset Time) and Watchdog Reset Logical
Combined at Open Drain Output NRES
High-speed Mode Up to 115 kBaud
Internal 1:6 Voltage Divider for V
Battery
Sensing
Negative Trigger Input for Watchdog
Boosting the Voltage Regulator Possible with an External NPN Transistor
LIN Physical Layer According to LIN 2.0, 2.1 and SAEJ2602-2
Wake-up Capability via LIN-bus, Wake Pin, or Kl_15 Pin
INH Output to Control an External Voltage Regulator or to Switch off the Master Pull Up
Resistor
Bus Pin is Overtemperature and Short-circuit Protected versus GND and Battery
Adjustable Watchdog Time via External Resistor
Advanced EMC and ESD Performance
ESD HBM 8 kV at Pins LIN and VS According to STM5.1
Package: QFN 5 mm × 5 mm with 20 Pins
1. Description
The ATA6628 is a fully integrated LIN transceiver, which complies with the LIN 2.0,
2.1 and SAEJ2602-2 specifications. It has a low-drop voltage regulator for
3.3V/50 mA output and a window watchdog. The ATA6630 has the same functionality
as the ATA6628; however, it uses a 5V/50 mA regulator. The voltage regulator is able
to source 50 mA, but the output current can be boosted by using an external NPN
transistor. This chip combination makes it possible to develop inexpensive, simple, yet
powerful slave and master nodes for LIN-bus systems. ATA6628/ATA6630 are
designed to handle the low-speed data communication in vehicles, e.g., in conve-
nience electronics. Improved slope control at the LIN-driver ensures secure data
communication up to 20 kBaud. Sleep Mode and Silent Mode guarantee very low cur-
rent consumption.
LIN Bus
Transceiver
with 3.3V (5V)
Regulator and
Watchdog
ATA6628
ATA6630
Preliminary
9117C–AUTO–10/09
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Inhaltsverzeichnis

Seite 1 - 1. Description

Features• Master and Slave Operation Possible• Supply Voltage up to 40V• Operating voltage VS = 5V to 27V• Typically 10 µA Supply Current During Sleep

Seite 2 - Figure 1-1. Block Diagram

109117C–AUTO–10/09ATA6628/ATA6630 [Preliminary] A falling edge at the LIN pin followed by a dominant bus level maintained for a certain timeperiod (tb

Seite 3

119117C–AUTO–10/09ATA6628/ATA6630 [Preliminary]4.3 Sleep ModeA falling edge at EN when TXD is low switches the IC into Sleep Mode. The TXD Signal has

Seite 4 - 3. Functional Description

129117C–AUTO–10/09ATA6628/ATA6630 [Preliminary] A falling edge at the LIN pin followed by a dominant bus level maintained for a certain timeperiod (tb

Seite 5

139117C–AUTO–10/09ATA6628/ATA6630 [Preliminary]4.4 Sleep or Silent Mode: Behavior at a Floating LIN-bus or a Short Circuited LIN to GNDIn Sleep or in

Seite 6

149117C–AUTO–10/09ATA6628/ATA6630 [Preliminary] Figure 4-7. Short Circuit to GND on the LIN bus During Sleep- or Silent Mode Sleep/Silent ModeIVSsleep

Seite 7

159117C–AUTO–10/09ATA6628/ATA6630 [Preliminary]4.5 Fail-safe ModeThe device automatically switches to Fail-safe Mode at system power-up. The voltage r

Seite 8 - 4. Modes of Operation

169117C–AUTO–10/09ATA6628/ATA6630 [Preliminary] 4.6 Unpowered ModeIf you connect battery voltage to the application circuit, the voltage at the VS pin

Seite 9

179117C–AUTO–10/09ATA6628/ATA6630 [Preliminary]5. Wake-up Scenarios from Silent or Sleep Mode5.1 Remote Wake-up via Dominant Bus StateA voltage less t

Seite 10 - Normal mode

189117C–AUTO–10/09ATA6628/ATA6630 [Preliminary] 5.5 Fail-safe Features• During a short-circuit at LIN to VBattery, the output limits the output curren

Seite 11 - ATA6628/ATA6630 [Preliminary]

199117C–AUTO–10/09ATA6628/ATA6630 [Preliminary]5.6 Voltage RegulatorThe voltage regulator needs an external capacitor for compensation and for smoothi

Seite 12 - 9117C–AUTO–10/09

29117C–AUTO–10/09ATA6628/ATA6630 [Preliminary] Figure 1-1. Block Diagram HighSpeedModeAdjustableWatchdogOscillatorShort Circuit andOvertemperatureProt

Seite 13

209117C–AUTO–10/09ATA6628/ATA6630 [Preliminary] 6. WatchdogThe watchdog anticipates a trigger signal from the microcontroller at the NTRIG (negative e

Seite 14 - Sleep/Silent

219117C–AUTO–10/09ATA6628/ATA6630 [Preliminary]Figure 6-1. Timing Sequence with RWD_OSC = 51 kΩ 6.2 Worst Case Calculation with RWD_OSC = 51 kΩThe int

Seite 15

229117C–AUTO–10/09ATA6628/ATA6630 [Preliminary] 7. Absolute Maximum RatingsStresses beyond those listed under “Absolute Maximum Ratings” may cause per

Seite 16 - 4.7 High-speed Mode

239117C–AUTO–10/09ATA6628/ATA6630 [Preliminary]8. Thermal CharacteristicsParameters Symbol Min. Typ. Max. UnitThermal resistance junction to heat slug

Seite 17

249117C–AUTO–10/09ATA6628/ATA6630 [Preliminary] 2 RXD Output Pin2.1Low-level output sink currentNormal ModeVLIN=0VVRXD=0.4VRXD IRXD1.3 2.5 8 mA A2.2 L

Seite 18 - 5.5 Fail-safe Features

259117C–AUTO–10/09ATA6628/ATA6630 [Preliminary]8.3 Driver dominant voltageVVS = 18VRload = 500 ΩLIN V_HiSUP2VA8.4 Driver dominant voltageVVS = 7.0VRlo

Seite 19

269117C–AUTO–10/09ATA6628/ATA6630 [Preliminary] 10.2Time delay for mode change from Fail-safe into Normal Mode via EN pinVEN = VCCEN tnorm51520µsA10.3

Seite 20 - 6. Watchdog

279117C–AUTO–10/09ATA6628/ATA6630 [Preliminary]12 NRES Open Drain Output Pin12.1 Low-level output voltageVS≥ 5.5VINRES = 1 mAINRES = 250 µANRES VNRESL

Seite 21

289117C–AUTO–10/09ATA6628/ATA6630 [Preliminary] 17 VCC Voltage Regulator ATA6628 in Normal/Fail-safe and Silent Mode, VCC and PVCC Short-circuited17.1

Seite 22 - 7. Absolute Maximum Ratings

299117C–AUTO–10/09ATA6628/ATA6630 [Preliminary]19 DIV_ON Input Pin19.1 Low-level voltage input DIV_ON VDIV_ON–0.3 +0.8 V A19.2 High-level voltage inpu

Seite 23

39117C–AUTO–10/09ATA6628/ATA6630 [Preliminary]2. Pin ConfigurationFigure 2-1. Pinning QFN20 67 8 10920 19 18QFN 5 mm 5 mm0.65 mm pitch20 leadATA6628

Seite 24

309117C–AUTO–10/09ATA6628/ATA6630 [Preliminary] Figure 9-1. Definition of Bus Timing Characteristics TXD(Input to transmitting node)VS(Transceiver sup

Seite 25

319117C–AUTO–10/09ATA6628/ATA6630 [Preliminary]Figure 9-2. Application Circuit 67 8 10920 19 18MLP 5 mm 5 mm0.65 mm pitch20 leadATA6628ATA6630161112

Seite 26

329117C–AUTO–10/09ATA6628/ATA6630 [Preliminary] 11. Package Information10. Ordering InformationExtended Type Number Package RemarksATA6628-PGPW QFN20

Seite 27

339117C–AUTO–10/09ATA6628/ATA6630 [Preliminary]12. Revision HistoryPlease note that the following page numbers referred to in this section refer to th

Seite 28

9117C–AUTO–10/09Headquarters InternationalAtmel Corporation2325 Orchard ParkwaySan Jose, CA 95131USATel: 1(408) 441-0311Fax: 1(408) 487-2600Atmel Asia

Seite 29

49117C–AUTO–10/09ATA6628/ATA6630 [Preliminary] 3. Functional Description3.1 Physical Layer CompatibilitySince the LIN physical layer is independent fr

Seite 30

59117C–AUTO–10/09ATA6628/ATA6630 [Preliminary]3.7 Input/Output Pin (TXD)In Normal Mode the TXD pin is the microcontroller interface used to control th

Seite 31

69117C–AUTO–10/09ATA6628/ATA6630 [Preliminary] 3.13 TM Input PinThe TM pin is used for final production measurements at Atmel®. In normal application,

Seite 32 - 10. Ordering Information

79117C–AUTO–10/09ATA6628/ATA6630 [Preliminary]3.20 DIV_ON Input PinThe DIV_ON pin is a low voltage input. It is used to switch on or off the internal

Seite 33

89117C–AUTO–10/09ATA6628/ATA6630 [Preliminary] 4. Modes of OperationFigure 4-1. Modes of Operation Unpowered Mode(See Section 4.5)a: VS > VSthFb: V

Seite 34 - Product Contact

99117C–AUTO–10/09ATA6628/ATA6630 [Preliminary]4.1 Normal ModeThis is the normal transmitting and receiving mode. The voltage regulator is active and c

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